CommunityJev Integrations & Adapters
Decision models on Router+
A router playground that serves several System One decision models from one place: Jev, Perplexity's Decider, Bespoke Nimble, Mercury Decide, Clef, Kev 4B, and Decider 2B, with three of them free.
- Published by
- Community
- Author
- Alok Bishoyi
- Last verified
- Oct 2026
Works forJev for Routing
Used inJev for Software & DevTools
Highlights
- One playground for seven decision models, including Jev, Clef, Decider, Nimble, and Kev 4B.
- Three of the models are free to try, per the launch post.
- Useful for comparing System One implementations against the same typed question shape.
Watch out
A third-party router, not an official TypeSafe surface; it adds a hop in the request path and model availability can change.
Questions about this entry
Short answers drawn from the linked project or page.
The launch post lists Jev, Perplexity's Decider, Bespoke Nimble, Mercury Decide, Cloudflare Clef, Kev 4B, and Decider 2B, giving seven models behind one playground.
Three, per the author's post, so you can compare a few decision models before paying for the rest; the playground is at app.routerplus.com/playground.
It lets you try the same state-and-questions request against different System One implementations and swap the backend without rewriting the calling code.
Developers weighing Jev against the open and rival decision models, who want one place to compare them rather than signing up to each provider separately.
No. Router+ is a third-party gateway that includes Jev among other decision models, and it is not an official TypeSafe product.
The models it lists answer the same typed Choice, Score, and Noul questions, so the value is comparison and switching rather than a different request shape.
If you only need Jev, going direct avoids an extra intermediary in the path; a router is most useful when you are actively comparing or wants a fallback between decision models.
Reactions & coverage
Posts, threads, and videos about this entry from around the web.
LinkedIn: What multimodal decision models actually change, and what they do not.
LinkedInJevDirectory.org
Hacker News: Decision Index 0.2.1 scores open reproductions of Jev on a frozen suite.
jackbravo4 pointsDecision Index 0.2.1 – 70 open reproductions of TypeSafe Jev's Decision ModelRead the thread on Hacker NewsHacker News: Pointer to a DiffusionGemma plus vLLM tutorial for a Jev-shaped classifier.
1 pointHow to build a Jev-style classifier with DiffusionGemma and vLLMRead the thread on Hacker NewsHacker News: A one-token logprob wrapper that also classifies webcam frames.
allanrbo151 pointsA single function Jev-like wrapper for LLMs, including vision modelsRead the thread on Hacker NewsRelated terms
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